Lookup your domain for sender policy framework details.
The Sender Policy Framework (SPF) is a DNS TXT type record that lists authenticated servers for sending emails on behalf of your domain.
There are two essential reasons to have an SPF record for any domain: security and email delivery.
SPF records ensure that nobody impersonates your servers to email your users. An SPF entry in your DNS TXT record facilitates for IP address authentication every time a mail is sent.
And since the SPF records won’t mention the fraud IP address, the mail won’t get delivered or will land in the spam folder instead.
In addition, having SPF records improves email delivery.
Emails sent by domains without an SPF record may cause the mail to get delivered to the spam box, missing crucial communication.
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